docs: def post(self, request, uri):
          """
          Set node data for uri, return rendered content.
  
          JSON Response:
              {uri: x, content: y}
          """
          uri = self.decode_uri(uri)
          data, meta = self.get_post_data(request)
          meta['author'] = auth.get_username(request)
          node = cio.set(uri, data, publish=False, **meta)
          return self.render_to_json(node)